WO2002033284A1 - Brake pad/shoe deterioration warning device - Google Patents

Brake pad/shoe deterioration warning device Download PDF

Info

Publication number
WO2002033284A1
WO2002033284A1 PCT/ZA2001/000158 ZA0100158W WO0233284A1 WO 2002033284 A1 WO2002033284 A1 WO 2002033284A1 ZA 0100158 W ZA0100158 W ZA 0100158W WO 0233284 A1 WO0233284 A1 WO 0233284A1
Authority
WO
WIPO (PCT)
Prior art keywords
friction
colour
brake pad
drum
disk
Prior art date
Application number
PCT/ZA2001/000158
Other languages
French (fr)
Inventor
Leon Roos
Original Assignee
Roos, Marius
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Roos, Marius filed Critical Roos, Marius
Priority to AU2002224487A priority Critical patent/AU2002224487A1/en
Publication of WO2002033284A1 publication Critical patent/WO2002033284A1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature

Definitions

  • a colour pigment(s)/oxide(s) will be mixed/added into the friction compound, the closest to the backing plate.
  • This section can be any chosen percentage /thickness in relation to the total thickness of the brake pad/shoe.
  • a blackish powder/dust is given off which accumulates on the vehicle's rim.This powder is visible to the eye and will serve as a base background for the colour phase.
  • colour phase means pigment/oxide that mixed into the brake friction compound.
  • colour phase means pigment/oxide that mixed into the brake friction compound.
  • a coloured powder/dust will accumulate on the rim. This colour will serve as a reminder/warning to the operator, that he/she has a limited amount of time/kilometres left to replace the brake pads/shoes.
  • Any colour pigment/oxide can be used to dye/mix in with the brake friction compound, including the following.
  • Any colour spectrum (A to Z) can be used, from a matte, gloss, metallic to fluorescent, in no specific order.
  • the oxide/pigment can be in the form of a solid liquid, powder or crystals.
  • ® Can be added/mixed on to the friction compound in the forms of layers, random spots, strips, capsules, tablets, grooves, rods and pins.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)

Abstract

During normal friction/wear a blackish powder/dust is given off that accumulates on the rim. At a certain stage the disk/drum will get in contact with the first colour fhase in the friction element mixture that, for example purpose is orange. This colour will serve as a warning to the operator, giving him approximatly a thousand kilometres to replace the pads/shoes as a least measure the disk/drum will get into contact with the second colour phase in the friction element mixture that for example purposes is red. During this phase the friction pad will give off a red powder/dust that will accumulate on the rim. This will serve as a final warning to the operator, telling him that the brake pad/shoes are absolete and he has approximately one hundred kilometres left before there will be friction between the disk/drum and bracking plate.

Description

BRAKE PAD/SHOE DETERIORATION WARNING DEVICE
TECHNICAL FIELD TO WHICH INVENTION RELATES
Spot type or any other brake pad/shoe being used for the automotive/train /plane/space and trailer industry.
Back ground of the invention
Before this invention; the "normal" friction compounds that are used in brake pads/shoes, gives off a blackish powder/dust due to wear, this then accumulate on the rims of the vehicle. There in no pre-warning indication as to when the brake pads/shoes are worn out, except for the luxury vehicles that are fitted with an elelctronic warning device. Even this device is not failure proof. After total wear no warning is signalled to the operator to tell him to replace the vehicle's brake pads/shoes. It is normally detected when there is friction between the disc/drum and the backing plate. This 'METAL on METAL" friction leads to future damage to the other mechanisms on the braking system.
Summary of the invention
A colour pigment(s)/oxide(s) will be mixed/added into the friction compound, the closest to the backing plate. This section can be any chosen percentage /thickness in relation to the total thickness of the brake pad/shoe.During normal wear a blackish powder/dust is given off which accumulates on the vehicle's rim.This powder is visible to the eye and will serve as a base background for the colour phase.
As wear continues the brake pad/shoe automatically becomes thinner, until it will enter the colour phase (colour phase means pigment/oxide that mixed into the brake friction compound). During wear a coloured powder/dust will accumulate on the rim. This colour will serve as a reminder/warning to the operator, that he/she has a limited amount of time/kilometres left to replace the brake pads/shoes.
Object of theinvention
> Serve as preventive maintenance
> Would assist in pre-trip inspections
> Would improve road safty / handling Claims
Any colour pigment/oxide can be used to dye/mix in with the brake friction compound, including the following.
« Organic pigment + sub category
• Inorganic pigment + sub category
Dyes
1. Any colour spectrum (A to Z) can be used, from a matte, gloss, metallic to fluorescent, in no specific order.
2. Any quantity/combination of oxide and pigment can be used/added/ mixed into the friction compound.
3. The oxide/pigment can be in the form of a solid liquid, powder or crystals.
4. Can be added/mixed directly into the compound, or only the backing plate In both, and in no specific order.
Can be used/mixed/added at any ratio:
* volume to volume * volume to mass
* % to % * volume to %
* mass to mass * mass to %
® Can be added/mixed on to the friction compound in the forms of layers, random spots, strips, capsules, tablets, grooves, rods and pins.
* Can be mixed/added on to/at any surface of the friction pad, the backing plate, in any random order, comprising of the whole surface or any part thereof.
PCT/ZA2001/000158 2000-10-19 2001-10-11 Brake pad/shoe deterioration warning device WO2002033284A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002224487A AU2002224487A1 (en) 2000-10-19 2001-10-11 Brake pad/shoe deterioration warning device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA20005810 2000-10-19
ZA200005810 2000-10-19

Publications (1)

Publication Number Publication Date
WO2002033284A1 true WO2002033284A1 (en) 2002-04-25

Family

ID=25588950

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ZA2001/000158 WO2002033284A1 (en) 2000-10-19 2001-10-11 Brake pad/shoe deterioration warning device

Country Status (2)

Country Link
AU (1) AU2002224487A1 (en)
WO (1) WO2002033284A1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3056380A (en) * 1961-01-16 1962-10-02 Andrew J White Brake lining
US3138224A (en) * 1962-04-30 1964-06-23 Andrew J White Brake having means to indicate wear
GB1384146A (en) * 1971-07-20 1975-02-19 Ruhrkohle Ag Friction lining for a drive pulley or drums
GB2047827A (en) * 1979-04-25 1980-12-03 Stoker D Wear indicating
US4604604A (en) * 1984-06-29 1986-08-05 International Harvester Company Vapor emitting wear indicator
JPH11280806A (en) * 1998-03-30 1999-10-15 Kawasaki Steel Corp Wear limit display liner

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3056380A (en) * 1961-01-16 1962-10-02 Andrew J White Brake lining
US3138224A (en) * 1962-04-30 1964-06-23 Andrew J White Brake having means to indicate wear
GB1384146A (en) * 1971-07-20 1975-02-19 Ruhrkohle Ag Friction lining for a drive pulley or drums
GB2047827A (en) * 1979-04-25 1980-12-03 Stoker D Wear indicating
US4604604A (en) * 1984-06-29 1986-08-05 International Harvester Company Vapor emitting wear indicator
JPH11280806A (en) * 1998-03-30 1999-10-15 Kawasaki Steel Corp Wear limit display liner

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 01 31 January 2000 (2000-01-31) *

Also Published As

Publication number Publication date
AU2002224487A1 (en) 2002-04-29

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